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2 năm trước
Cho các nhóm chất sau: 1. Khí cacbonic, đường gluzo 2. Fe, O2 3. Nước cất, muối ăn 4. Khí ôznon, khí nito 5. HCl, H2SO4 6. Kim cương, than chì Nhóm gồm các hợp chất là: A. 3,5,6 B. 2,4,6 C. 1,3,5 D. 3,4,5
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